Building-block.



R. B. KEAGLE.

BUILDING BLOCK.

APPLIOATION FILED M31115, 1907.

Patented May 25, 1909.

wi bmaooeo 7 iggvws ROY E. KEAGLE, OF LODI, CALIFORNIA.

BUILDING-BLOCK.

Specification of Letters Patent.

Application filed February 15, 1907.

Patented May 25, 1909.

Serial No. 357,449.

To all whom it may concern:

Be it known that I, ROY E. KEAGLE, a citizen of the United States,residing at Lodi, in the county of San Joaquin and State of California,have invented certain new and useful Im rovements in Building-Blocks andI do dec are the following to be a full, clear, and exact description ofthe same, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the characters of reference markedthereon, which form a part of this specification.

This invention relates to im rovements in building blocks, andparticularly to that class of blocks used in constructing two piece wallstructures.

My object is to produce a strong, durable and efiicient block and onewhich will not permit of the moisture percolating therethrough and thusleaking into the interior of the building. This object I accomplish bymeans of an elongated main block formed with a projecting tying tongue,said tongue being held outward from said main block by diagonal oroblique arms and forming an air space therebetween; also by such otherand further construction as will appear by a perusal of the followingspecification and claim.

In the drawings similar characters of reference indicate correspondingparts in the several views.

Figure 1 is a perspective view of a complete block. Fi 2 is a top planview of a section of a wal illustrating the manner of constructing awall with the improved building blocks.

1 designates the main body of the block which is formed with endprojections 2 and a central projection 3, said projection 3 being inalinement with the projections 2, all for the purpose as will appear.

Extending from the ends of the projection 3 are oblique or diagonalwings or arms 4, said wings holding outward a tying tongue 5, therebeing an air space 6 formed between said projection 3, arms 4 and tongue5, as appears from the drawings. The upper and lower faces of the block1, tongue 5 and wings 4 are flush as shown.

In constructing a wall the blocks are arran ed in a two piece wall inalternate rows as shown, the tongues 5 on one row on one piece of thewall being tied with mortar or other material to the ton ues of the nexthighest row of blocks on t e other piece of the wall, the arms 4 of eachside being in alinement with each other as shown.

The scheme of having the arms 4 arranged diagonally is twofold, first,to make the connected distance between the two pieces of the wall thelongest possible distance, thus causing any moisture which mightpercolate the wall to travel the longest possible distance, thuslessening the liability of leakage within the interior of the building.Secondly, to brace and tie the wall in the strongest manner possible, asit is well known that stone or cement will not stand much of a pull ortwist, but has enormous crushing strength; any unnatural straintherefore would be converted into crushing strain. The said arms 4 andtongues 5 are further advantageous in that they form an effectual centersupport for the said wall. Further the construction described permits,as is apparent, of a free circulating air space throughout the wall,thus aiding in preventing the percolation of moisture and kee ing thesame cool in summer. Thus it x 1 be seen that I have produced a buildingblock which substantially fulfils the objects of the invention as setforth in the statement of this specification.

While I have in this specification set forth the present and preferreddetail of construction of my im roved device, deviations therefrom may eresorted to within the scope of the appended claim without departingfrom the spirit of my invention.

Having thus described my invention, what I claim as new and useful anddesire to secure by Letters Patent is A building block comprising ablock proper having end projections extending vertically from top toottom of the inner face of said block, a center projection on said blockproper, such center projection being in substantial alinement with saidend projections, obliquely projecting arms extending outward from saidcenter projection and form ing an intermediate air space, and a tyingtongue projecting outward from the outer ends of such obliquelyextending arms.

In testimony whereof I aflix my signature in presence of two witnesses.

ROY E. KEAGLE.

Witnesses:

PERCY S. WEBSTER, FRANK I-I. CARTER.

